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Biogen Inc.

BIIB
Exchange
Nasdaq
Industry
Biological Products, (No Diagnostic Substances)
SEC CIK
0000875045

In the last 90 days, Biogen Inc. insiders filed 0 open-market purchases and 1 sale; 1,047 institutions reported holding it in 13F filings for Q2 2026, worth $30.7B in total; no superinvestor holds it.

13F holders, Q2 2021

Institutional positions in Biogen Inc. as of Jun 30, 2021. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works

Institutional holders
1,107
+26 vs. Q1 2021
Shares held
126.1M
−1.15M (−0.9%) vs. Q1 2021
Total value
$43.6B
+$8.06B (+22.7%) vs. Q1 2021
New holders
136
325 more added
Sold out
110
469 more reduced

15 institutions that held it in Q1 2021 haven't filed for Q2 2021 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q1 2021: new holders, sold out and not filed yet

Holders and value by quarter

Institutions reporting BIIB on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.

Institutional holdersQ2 2021: 1,107 institutions
Q1 2021: 1,096 institutionsQ2 2021: 1,107 institutionsQ3 2021: 1,044 institutionsQ4 2021: 1,014 institutionsQ1 2022: 954 institutionsQ2 2022: 930 institutionsQ3 2022: 987 institutionsQ4 2022: 1,033 institutionsQ1 2023: 1,004 institutionsQ2 2023: 1,009 institutionsQ3 2023: 966 institutionsQ4 2023: 1,005 institutionsQ1 2024: 955 institutionsQ2 2024: 947 institutionsQ3 2024: 921 institutionsQ4 2024: 879 institutionsQ1 2025: 882 institutionsQ2 2025: 867 institutionsQ3 2025: 909 institutionsQ4 2025: 1,002 institutionsQ1 2026: 1,015 institutionsQ2 2026: 1,047 institutions
Value heldQ2 2021: $43.6B
Q1 2021: $35.7BQ2 2021: $43.6BQ3 2021: $35.1BQ4 2021: $29.7BQ1 2022: $25.9BQ2 2022: $25.0BQ3 2022: $33.0BQ4 2022: $34.6BQ1 2023: $35.0BQ2 2023: $36.1BQ3 2023: $32.2BQ4 2023: $33.3BQ1 2024: $28.0BQ2 2024: $29.9BQ3 2024: $25.1BQ4 2024: $20.2BQ1 2025: $17.7BQ2 2025: $16.3BQ3 2025: $18.4BQ4 2025: $24.6BQ1 2026: $24.7BQ2 2026: $30.7B
Institutions holding BIIB and their total value by quarter
QuarterHoldersValue
Q2 20261,047$30.7B
Q1 20261,015$24.7B
Q4 20251,002$24.6B
Q3 2025909$18.4B
Q2 2025867$16.3B
Q1 2025882$17.7B
Q4 2024879$20.2B
Q3 2024921$25.1B
Q2 2024947$29.9B
Q1 2024955$28.0B
Q4 20231,005$33.3B
Q3 2023966$32.2B
Q2 20231,009$36.1B
Q1 20231,004$35.0B
Q4 20221,033$34.6B
Q3 2022987$33.0B
Q2 2022930$25.0B
Q1 2022954$25.9B
Q4 20211,014$29.7B
Q3 20211,044$35.1B
Q2 20211,107$43.6B
Q1 20211,096$35.7B

Institutions, Q2 2021

Shares, value and share of portfolio for each institution holding Biogen Inc.; share changes are against Q1 2021.

Institutions holding BIIB in Q2 2021
InstitutionSharesValue% of portfolioChange in sharesAction
Clark Estates Inc8,100$2.81M0.37%−11,500−58.7%Reduced
Banque Cantonale Vaudoise7,966$2.76M0.12%−1,110−12.2%Reduced
Kinneret Advisory, LLC7,921$2.74M0.32%00.0%Unchanged
Horizon Investments, LLC7,853$2.72M0.08%+5,551+241.1%Added
Seeyond7,807$2.70M0.25%+1,451+22.8%Added
Central Bank & Trust Co7,785$2.70M0.44%−459−5.6%Reduced
Private Advisor Group, LLC7,785$2.70M0.02%+104+1.4%Added
Loring Wolcott & Coolidge Fiduciary Advisors LLP7,734$2.68M0.03%−468−5.7%Reduced
Hendershot Investments Inc.7,721$2.67M0.58%−530−6.4%Reduced
Paradigm Asset Management Co LLC7,600$2.63M0.67%00.0%Unchanged
Creative Financial Designs Inc7,543$2.61M0.45%+1,061+16.4%Added
Chicago Trust Co NA7,519$2.60M0.62%+1,845+32.5%Added
Teza Capital Management LLC7,417$2.57M0.42%+7,417New
Malaga Cove Capital, LLC7,323$2.54M1.09%+131+1.8%Added
Pitcairn Co7,256$2.51M0.17%−1,107−13.2%Reduced
Cairn Investment Group, Inc.7,137$2.47M1.81%+175+2.5%Added
Leelyn Smith, LLC7,125$2.47M0.73%−436−5.8%Reduced
Cary Street Partners Asset Management LLC7,049$2.44M0.58%−22,275−76.0%Reduced
Capstone Investment Advisors, LLC6,966$2.41M0.06%+6,966New
Shell Asset Management Co6,953$2.41M0.05%−5,408−43.8%Reduced
Oppenheimer & Co Inc6,887$2.38M0.04%−4,524−39.6%Reduced
Dowling & Yahnke LLC6,854$2.37M0.14%−51−0.7%Reduced
Northwestern Mutual Investment Management Company, LLC6,836$2.37M0.04%−69−1.0%Reduced
People's United Financial, Inc.6,836$2.37M0.05%+56+0.8%Added
High Note Wealth, LLC6,755$2.34M0.85%−69−1.0%Reduced
Tower Research Capital LLC (TRC)6,737$2.33M0.06%−13,174−66.2%Reduced
Regentatlantic Capital LLC6,677$2.31M0.07%−300−4.3%Reduced
South Dakota Investment Council6,639$2.30M0.04%−540−7.5%Reduced
Clean Yield Group6,603$2.29M0.85%−6,651−50.2%Reduced
Financial Advisors Network, Inc.6,582$2.28M0.67%−259−3.8%Reduced
Mogy Joel R Investment Counsel Inc6,500$2.25M0.19%00.0%Unchanged
Cambridge Investment Research Advisors, Inc.6,496$2.25M0.01%−402−5.8%Reduced
Segantii Capital Management Ltd6,479$2.24M0.07%+211+3.4%Added
American Research & Management Co.6,449$2.23M0.51%−202−3.0%Reduced
Unison Advisors LLC6,428$2.23M0.41%+527+8.9%Added
Hudson Canyon Capital Management6,325$2.19M1.64%−25−0.4%Reduced
Oak Associates, Ltd6,305$2.18M0.12%−2,887−31.4%Reduced
Sumitomo Life Insurance Co6,257$2.17M0.07%−974−13.5%Reduced
E. Ohman J:or Asset Management AB6,199$2.15M0.07%00.0%Unchanged
Captrust Financial Advisors6,042$2.09M0.02%−130−2.1%Reduced
Roberts Glore & Co Inc6,039$2.09M0.63%+108+1.8%Added
Prelude Capital Management, LLC5,997$2.08M0.11%+5,997New
National Asset Management, Inc.6,031$2.05M0.07%−1,002−14.2%Reduced
Brown Brothers Harriman & Co5,894$2.04M0.01%−417−6.6%Reduced
QS Investors, LLC5,767$2.00M0.02%−26−0.4%Reduced
Neuberger Berman Group LLC7,910$1.98M0.00%+2,577+48.3%Added
Cohen Investment Advisors LLC5,674$1.97M1.53%−403−6.6%Reduced
Weiss Asset Management LP5,612$1.94M0.05%+5,612New
Evergreen Capital Management LLC5,605$1.94M0.09%−1,629−22.5%Reduced
Federated Hermes, Inc.5,587$1.94M0.00%−1,792−24.3%Reduced
Berkshire Asset Management LLC5,568$1.93M0.13%−285−4.9%Reduced
Burney Co5,532$1.92M0.09%−101−1.8%Reduced
Glenview Trust Co5,431$1.88M0.07%−877−13.9%Reduced
Northwestern Mutual Wealth Management Co5,330$1.85M0.00%−9,774−64.7%Reduced
Sompo Asset Management Co., Ltd.5,300$1.83M0.38%−550−9.4%Reduced
Whittier Trust Co5,279$1.83M0.03%−943−15.2%Reduced
Spears Abacus Advisors LLC5,280$1.83M0.13%00.0%Unchanged
Fernwood Investment Management, LLC5,260$1.82M0.60%−225−4.1%Reduced
Ameritas Investment Partners, Inc.5,254$1.82M0.07%−51−1.0%Reduced
Regions Financial Corp5,191$1.80M0.02%−10,228−66.3%Reduced
Richard Bernstein Advisors LLC5,164$1.79M0.04%00.0%Unchanged
Granite Point Capital Management, L.P.5,000$1.73M0.51%+5,000New
Vestcor Inc4,993$1.73M0.06%−282−5.3%Reduced
Advisors Asset Management, Inc.4,993$1.73M0.03%+507+11.3%Added
Veritable, L.P.4,984$1.73M0.03%+854+20.7%Added
DuPont Capital Management Corp4,969$1.72M0.04%−1,048−17.4%Reduced
Prairiewood Capital, LLC4,920$1.70M1.46%−286−5.5%Reduced
Eqis Capital Management, Inc.4,861$1.68M0.13%−83−1.7%Reduced
Cigna Investments Inc4,807$1.67M0.12%−763−13.7%Reduced
Bank Julius Baer & Co. Ltd, Zurich4,704$1.63M0.01%−56,987−92.4%Reduced
Pinnacle Associates Ltd4,642$1.61M0.03%−892−16.1%Reduced
Evercore Wealth Management, LLC4,610$1.60M0.03%−107−2.3%Reduced
MEAG MUNICH ERGO, Kapitalanlagegesellschaft mbH4,606$1.59M0.15%−336−6.8%Reduced
Alberta Investment Management Corp4,600$1.59M0.01%+1,100+31.4%Added
Richard P Slaughter Associates Inc4,593$1.59M0.61%−643−12.3%Reduced
MUFG Americas Holdings Corp4,529$1.57M0.03%+2,164+91.5%Added
Advisor Partners LLC4,506$1.56M0.10%−74−1.6%Reduced
Heron Bay Capital Management4,487$1.55M0.86%−2,765−38.1%Reduced
Wetherby Asset Management Inc4,466$1.55M0.09%−116−2.5%Reduced
World Asset Management Inc4,457$1.54M0.14%−14−0.3%Reduced
Hoey Investments, Inc4,433$1.53M0.47%+4,433New
Redpoint Investment Management Pty Ltd4,404$1.52M0.12%−85−1.9%Reduced
Cetera Investment Advisers4,371$1.51M0.02%+227+5.5%Added
Harvest Volatility Management LLC4,316$1.50M0.12%+1,013+30.7%Added
Advisory Services Network, LLC4,308$1.49M0.05%−247−5.4%Reduced
CAPROCK Group, Inc.4,293$1.49M0.14%−321−7.0%Reduced
Wesbanco Bank Inc4,288$1.49M0.06%+13+0.3%Added
Argent Capital Management LLC4,262$1.48M0.05%−46,908−91.7%Reduced
IBM Retirement Fund4,234$1.47M0.11%−1,001−19.1%Reduced
Fuller & Thaler Asset Management, Inc.4,221$1.46M0.01%−700−14.2%Reduced
Stratos Wealth Partners, LTD.4,216$1.46M0.04%+195+4.8%Added
Investment House LLC4,202$1.46M0.10%00.0%Unchanged
Camelot Portfolios, LLC4,196$1.45M0.59%−1,017−19.5%Reduced
Belpointe Asset Management LLC4,175$1.45M0.10%+1,162+38.6%Added
Motley Fool Asset Management LLC4,129$1.43M0.09%+892+27.6%Added
Synovus Financial Corp4,120$1.43M0.01%−95−2.3%Reduced
Los Angeles Capital Management LLC4,093$1.42M0.01%−37,107−90.1%Reduced
Wrapmanager Inc4,092$1.42M0.37%+33+0.8%Added
NorthCoast Asset Management LLC4,006$1.39M0.05%−34−0.8%Reduced
Estabrook Capital Management4,000$1.39M0.21%−5,000−55.6%Reduced